Advisory Committee Chair
Advisory Committee Members
Chung H Kau
Date of Award
Degree Name by School
Master of Dentistry (MDent) School of Dentistry
Objective: The purpose of this study is to evaluate skeletal stability at a minimum of one year following maxillary advancement distraction osteogenesis with the KLS Martin RED II System in non-syndromic CLP patients treated at UAB SOD. Methods: This retrospective cohort study evaluated 20 non-syndromic CLP patients (12 males, 8 females, average age 10.97) treated at the UAB SOD by the same surgeon for maxillary hypoplasia with rigid external distraction using the RED II System (KLS Mar-tin Group, Tuttlingen, Germany). Pre-surgical (T1), post-consolidation (T2), and LTFU (T3) radiographs were digitized and analyzed with via a custom analysis to evaluate treatment effects. Results: Advancement of the maxilla was observed in all patients from T1-T2 as evidenced by positive changes SNA and MD of 8.9° and a 7.7 mm AP change in maxillary skeletal landmarks. Relapse occurred on average 30-33% relative to Sperp. No significant predictors of relapse or stability were discovered. Similarly, neither gender nor UCLP/BCLP correlations with relapse rates were identified. Conclusion: External distraction osteogenesis is an option for advancing a retrusive maxilla in adolescents with CLP. However, at this time, long-term stability is unpredictable. Future studies should acknowledge Sella-perpendicular as a more accurate assessment of maxillary relapse in a growing population instead of anterior references using Nasion.
Carter, Jared Adrian, "Long-Term Stability Of Maxillary Advancement In Non-Syndromic Cleft Lip And Palate Patients Using The Red Ii System" (2014). All ETDs from UAB. 1338.